Date Published: August 01, 2009
Publisher: International Union of Crystallography
Author(s): Nam-Ho Kim, Kwang Ha.
http://doi.org/10.1107/S160053680902844X
Abstract
The asymmetric unit of the title compound, [MnBr2(C6H4NO2)(H2O)2]n, contains one monomeric unit of the neutral linear coordination polymer. The Mn3+ ions are bridged by anionic pyridine-2-carboxylate (pic) ligands, thereby forming a chain-like structure along the c axis, and are six-coordinated in a distorted octahedral environment by two O atoms of the two different carboxylate groups, two O atoms of two water molecules and two Br atoms. The complex displays intermolecular O—H⋯Br, O—H⋯N, O—H⋯O, C—H⋯O and C—H⋯Br hydrogen bonding. There may also be intermolecular π–π interactions between adjacent pyridine rings, with a centroid–centroid distance of 3.993 (8) Å.
Partial Text
For the synthesis and structure of [Mn(pic)3], see: Figgis et al. (1978 ▶); Yamaguchi & Sawyer (1985 ▶); Li et al. (2000 ▶). For the synthesis and structure of [Mn(pic)2(H2O)2], see: Okabe & Koizumi (1998 ▶); Barandika et al. (1999 ▶). For details of mono-, di- and polynuclear Mn(II, III, IV)–pic complexes, see: Huang et al. (2004 ▶). For the synthesis and structure of the anionic Mn(II)–pic polymer, {[MnBr2(pic)(H2O)]−}n, see: Kim et al. (2009 ▶).
Source:
http://doi.org/10.1107/S160053680902844X